Question 311434
dividing 1st eqn by 3 ___ 3x - 3y = 9


adding eqns to ELIMINATE x ___ 7y - 3x + 3x - 3y = -11 + 9


4y = -2 ___ y = -1/2


substituting ___ 3x - 3(-1/2) = 9 ___ x = 5/2